In Asia, we say that there are three sources of…

““In Asia, we say that there are three sources of energy--sexual, breath, and spirit...You need to know how to reestablish the balance, or you may act irresponsibly. According to Taoism and buddhism, there are practices to help reestablish that balance, such as meditation or martial arts. You can learn the ways to channel your sexual energy into deep realizations in the domains of art and meditation. The second source of energy is khi, breath energy. Life can be described as a process of burning. In order to burn, every cell in our body needs nutrition and oxygen...Some people cultivate their khi by refraining from smoking and talking, or by practicing conscious breathing after talking a lot...The third soruce of energy is than, spirit energy. When you don't sleep at night, you lose some of this kind of energy. Your nervous system becomes exhausted and you cannot sutdy or practice meditation well, or make good decisions. You don't have a clear mind because of lack of sleep or from worrying too much. Worry and anxiety drain this source of energy. So don't worry. Don't stay up too late. Keep your nervous system healthy. Prevent anxiety. These kinds of practices cultivate the third source of energy. You need this source of energy to practice meditation well. A spritual breakthrough requires the power of your spirit energy, which comes about through concentration and knowing how to preserve this source of energy. When you have strong spirit energy, you only have to focus it on an object, and you will have a breakthrough. If you don't have than, the light of your concentration will not shine brightly, because the light emitted is very weak," (35-36).””

— Thich Nhat Hanh